rails/rails — pull request #12635 by mperham (2013-10-24 20:22:42+00:00)
Title: Allow any version of BCrypt

The documentation and Gemfile generator already contain a suggested version restriction. It would be really really nice if Rails allowed developers to use a later version to take advantage of new features. For instance, we're on 3.2.x and are locked to ~3.0.0 so we can't use 3.1.x. :-1: